The Investigation On High School Students’ Level Of Understanding To Quantity Control Of Experimental Conditions In Experiments

The basis for the emergence and development of the chemical sciences is Chemistryexperiment，with the implementation and in-depth of the education reform，chemistry coursehas undergone tremendous changes，so that people have a new understanding and evaluationof chemical experimental teaching. In chemical experimental teaching， experimentalconditions of the control is very important，different conditions controlled by the sameexperiment，or different from the degree of control of the same condition，the process orproduct of the reaction may be different，for example：concentration of reactants，externalconditions，such as temperature，reagents，such as status、dosage、orde and so on.The controlof the students for variables of the experiment and quantitative analysis capability is veryimportant in a chemistry experiment teaching，for this issue，senior grade students is object ofmy research，by literature analytic method、questionnaire method、statistical analysis method，reference the theory of five thinking levels of geometry given by Hollan educator Hillerand,statistical analysis of the results of the questionnaire, try to divide of Five levels ofunderstanding, and analysis the reason of influence.